typescript · beginner · ~15 min
Narrow a union
Export `area(shape: {kind:'circle', r:number} | {kind:'rect', w:number, h:number}): number`. Circles use Math.PI * r * r.
Output
Run to see output.
typescript · beginner · ~15 min
Export `area(shape: {kind:'circle', r:number} | {kind:'rect', w:number, h:number}): number`. Circles use Math.PI * r * r.
Output
Run to see output.